Synchronization method, device and UE when measuring TD-SCDMA cell

The invention discloses a method for synchronizing while measuring the TD-SCDMA (time division-synchronous code division multiple access) cell, which comprises the following steps: receiving TD-SCDMA data in the idle time slot of GSM (global system for mobile communications), wherein the TD-SCDMA data include the data in at least one TD-SCDMA frame; mobile-computing a feature window ratio on the TD-SCDMA data; stopping computing the data of the current TD-SCDMA frame when the feature window ratio exceeds the pre-set threshold value, and confirming the position of a downlink pilot time slot according to the position of the data corresponding to the feature window ratio; confirming the code number and the accuracy position of a synchronizing sequence; and acquiring the synchronizing sequence in the downlink pilot time slot according to the accurate position of the downlink pilot time slot. The invention discloses a device for synchronizing while measuring the TD-SCDMA cell at the same time. The invention dispen